Our club (Kettlerangesnowriders.com) has the same groomer. Around 2500 hours the tracks will start to delaminate at the base of the paddles. Tracks are around $4-5k for each one. Also look at the idler wheels for wear and misalignment. A general once over of the drive train looking for leaks and repairs. The cummins diesel is pretty much bullet proof. I will say I have limited experience so I am sure others my have more to say. BTW, the Tucker is a great machine, can go through just about anything. Our club is thinking about buying another one.
